单词：bunching of electron beam
电子注(束)之集束作用
单词：bunching of electron beam 相关文章
beam, [bi:m] n 大梁（建筑中用作支撑的木材、金属或石头）；光柱；臀围；平衡木 【船】横梁; 船幅; 船舷 (秤)杆; (犁)柄; (锄)把; 卷轴; 横杆; 杠杆 (鹿角的)主干 (灯光、日光、月光等的)束, 道,
发表于:2018-12-30 / 阅读(69) / 评论(0)
不择手段背单词
不择手段背单词
Bob Beamon established himself as the favourite in the 1968 long jump by winning 22 of 23 meets in the pre-Olympic season. He almost met with disaster in the qualifying round. After fouling his first two attempts, he had only one try left. His teamma
发表于:2019-01-08 / 阅读(122) / 评论(0)
英美文化
英美文化
Right on the beam To fly by the seat of his pants 美国英语当中有许多成语和俗语都和过去的历史有关系。例如，美国开拓西部的过程给美国语言增添了不少色彩。可
发表于:2019-01-14 / 阅读(122) / 评论(0)
美国习惯用语
美国习惯用语
Neutrons and protons occupy the atom's nucleus. The nucleus of an atom is tinyonly one millionth of a billionth of the full volume of the atombut fantastically dense, since it contains virtually all the atom's mass. As Cropper has put it, if an atom
发表于:2019-02-17 / 阅读(37) / 评论(0)
万物简史
万物简史